223001

Appears in sequences

• Number of permutations of 1..n with the number moved left exceeding the number moved right by 0 or more.at n=9A179566
• a(n) = Sum_{k=0..n} (2k+1)*C(n,k)^2*C(n+k,k)^2, where C(n,k) denotes the binomial coefficient n!/(k!*(n-k)!).at n=4A246462